Journal box for cutters



Get. 7 1924.

H. C. GEIST JOURNAL BOX FOR CUTTERS Filed Jan. 16

1924 2 Sheets-Shea. 1

Oct. 7 1924.

H. c. GEIST JOURNAL BOX FOR CUTTBROI Filed Jan. 16 1924 2 Shgets-Shee. 2

Patented Get. 7, 1924.

HARRY C. GEIfiI, OF WAYNESBORO, LPENNSYLVANIA".

' I JOURNAL BOX FOB CUTTERS.

Application filed January 16, 1924. Serial No. 686,677.

To all whom it may concern:

Be it known that I, HARRY C. Gnrsr, a citizen of the United States, residing at IVaynesboro, in the county of Franklin and State of Pennsylvania, have invented certain new and useful Improvements in Journal Boxes for Cutters, of which the following is a specification.

The present invention relates to bearings for rotary cutting tools and the like, against which considerable lateral thrust or pressure is exerted during the cutting operation. It is more particularly intended for pipe or tube cutting machines. In these machines a rotary cutter is employed, and the pipe or tube is raised against the cutter, thus creating side strain on the cutter and its carrying shaft. As a consequence the shaft bearing adjacent to the cutter becomes worn and misshapen and it is difficult to maintain the roper alinement and support of the shaft. This difficulty is overcome in the present invention, the preferred embodiment of which is disclosed in the accompanying drawings.

In said drawings 8 Figure 1 is a side elevation of the pipe cutting machine,

Figure 2 is a front elevation of the same,

Figure 3 is a detail elevation on an en larged scale of the shaft bearing box,

Figure 4 is a sectional view on the line 44 of Figure 3,

Figure 5 is a sectional view on the line 55 of Figure 4,

Figure 6 is a detail perspective view of the bushing, indicating the manner in which it is constructed.

In the embodiment disclosed, a support in the form of a hollow standard 7 is provided, and the upper portion of one wall thereof is provided with a journal box, preferably made integral with said wall. This journal box comprises a tubular portion 8 that extends into the standard and an outstanding portion comprising an outstanding tubular boss 9 and a generally semi-cylindrical lower portion 10. Overlying said semi-cylindrical portion 10 is a cooperating cap portion 11. These portions 10 and 11 are connected by draft bolts 12, and interposed between them are sets of removable thin spacing strips or liners 13.

Fitted into the boX, is a bearing bushing comprising an inner completely tubular portion 14 and an outer sectional portion comprising a lower semi-cylindrical section 15 integral with the tubular portion 14. A separable cap 16 overlies the portion 15 and normally has its longitudinal edges spaced from the opposing edges of the integral portion 15. In the preferred method of manufacturing this bushing, a tubular sleeve is employed and the section 16 is cut therefrom with portions 17 milled out to form the spaces between the sections 15 and 16. The bushing when in place has its tubular portion 14 extending into the tubular portion 8 and boss 9 0f thebox and also in the wall of the standard 7 as will be clear by reference to Figures 3 and 5. The section 16, it will be noted, is under the cap 11 of thebox.

The cutter-carrying shaft 18 is journaled in the bushing and box, and has a projecting end 19, on which is fixed the rotary cutting tool or disk 20. The shaft is driven in the mits motion from a drive shaft 21. This shaft 21 is provided with fixed and loose pulleys 22 and 23 adapted to receive a driving belt that can be shifted from one to the other by a belt shifter shown at 24.

Vertically slidable on the front of the standard below the cutter is a work support 25 having a stem 26 that rests upon a cam 27. This cam is carried by a rock shaft 28 having a treadle '29 mounted thereon. A hand lever 30, mounted on one side of the machine, has a link connection 31 with a crank arm 32, also connected to the shaft 28. Obviously therefore when the shaft, 28 is rotated by either the hand lever or the treadle29, the work supporting member 25 will be elevated, and if a pipe is thereon, said pipe will be carried into contact with the rotary cutter 20. It will be clear, that this pressure places material lateral or upward strain upon the cutter 20 and the shaft 18 carrying it. Consequently the bearing of said shaft adjacent to the cutter is subjected to material wear. With the present construction, it will be evident that this wear can easily be taken up by removing one or more of each set of spacing strips or liners 13, so that the alignment and proper bearing of the shaft 18 can be eas ily maintained. Moreover when the bushing section 16 becomes greatly worn, itcan be removed and replaced by a new section without the necessity of revising the entire bearing.

Fro-m the foregoing, it is thought that the construction, operation and many advantages of the herein described invention will be apparenttoithose skilled in the art, without further description, and it will be understood that various changes in the size, shape, proportion and minor details of construction may be resorted to without depart ing from the spirit or sacrificing any of the advantages of the invention-v Having thus fully described my invention, what I claim'as new and desire to secure by Letters Patent, i

1. A lateral thrustbearingfor rotary cutters and-the like comprising a support having a contractile bearingbox, a bushing comprising a portion that is transversely continuous and a portion composed of see tions that is in the contractile box, and a shaft ournaled in. the bushing.

2. A lateral thrust bearing for rotary cutters and the like comprising asupport having. a bearing bOzX, said bearing box having'sections. means: for drawing the sections towards each other, detach-ablespacing elements located between said sections, and-a bushing:comprisingasleeve', a portion of which is continuous, another portion com:-

prising sections located between the sections:

of the box;

3. A lateral thrust bearing. for rotary cutters and the like comprising a. support having, a bearing box, portion: of which is continuously tubular and a portion of which comprises sections, vmeans for drawing the sections towards each other, detachable spacing elements located between said sections, a bushing comprising a continuous sleeve fitted in the completely tubular portion of the box said bushing having a portioncomprising sections that are located between the sections of the box, and means for drawing together the boX sections.

4. In apparatus of the character-set forth, the combination with a supporting standard having a journal box, a portion of which is in the standard and a portion of which pro jects therefrom, said projecting portion comprising a lower section and an upper removable section, detachable spacing elements between the sections, draft bolts connecting the sections, a.bushing"com-prising a tubular-portion in the portion of the ournal box that is located. in the standard, .said bushing having outer sections located between the projecting box sections, a-"shatt journaled in the bushingv and carryin'ga rotary cutter at the outer end ofthe journal box, and: an upwardly movable work sup port below the cutter;

In testimony whereof I aflix my signa ture.

HARRY C. GEIST. 

